plumiMaintaining internal environments: OCR GCSE Combined Science A questions
Every OCR GCSE Combined Science A exam question on B3.3 Maintaining internal environments, 2018–2025, with its mark scheme and examiner’s report.
Paper
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Exam
All years
Calculations
- Your answer
Q16(a)
The whole paper ↗Q16(b)
The whole paper ↗- Your answer
- Your answer
- Your answer
Q14(d)(i)
The whole paper ↗Q14(d)(ii)
The whole paper ↗Q14(d)(iii)
The whole paper ↗- Your answer
Q12(d)
The whole paper ↗Q13(c)
The whole paper ↗- Your answer
Q15(a)(ii)
The whole paper ↗Q11(a)
The whole paper ↗- Your answer
Q15(a)
The whole paper ↗- Your answer
- Your answer
- Your answer
All 35 questions on Maintaining internal environments, as a list
- June 2025, Biology Paper 1 Foundation, Q5 (1 mark): Which statement describes the relationship between insulin and blood sugar levels? A Insulin decreases blood sugar levels. B Insulin has no effect on blood suga
- June 2025, Biology Paper 1 Foundation, Q16(a) (2 marks): Why is a constant body temperature needed to allow metabolic reactions to happen at the correct rate? Tick (✓) two boxes. At low temperatures, there are fewer s
- June 2025, Biology Paper 1 Foundation, Q16(b) (3 marks): Diabetes is a medical condition that can affect blood glucose levels. Give three ways that type 1 diabetes is different to type 2 diabetes. 1 2 3 [3]
- June 2025, Biology Paper 7 Higher, Q9 (1 mark): Which row correctly shows the role of glucagon? Effect on blood glucose concentration Effect on the liver A decreases increases breakdown of glycogen B decrease
- June 2024, Biology Paper 1 Foundation, Q9 (1 mark): The table shows some information about insulin in the body. Which row shows the correct information about insulin? Organ that produces insulin Type of signal Ta
- June 2024, Biology Paper 7 Higher, Q1 (1 mark): The table shows some information about insulin in the body. Which row shows the correct information about insulin? Organ that produces insulin Type of signal Ta
- June 2024, Biology Paper 7 Higher, Q14(d)(i) (1 mark): Identify hormone Y. [1]
- June 2024, Biology Paper 7 Higher, Q14(d)(ii) (2 marks): Explain why hormone X is glucagon. [2]
- June 2024, Biology Paper 7 Higher, Q14(d)(iii) (3 marks): Compare the functions of glucagon and hormone Y. [3]
- June 2023, Biology Paper 1 Foundation, Q1 (1 mark): Which of these substances is transported out of the human body as waste? A Blood B Food molecules C Oxygen D Urea Your answer [1]
- June 2023, Biology Paper 1 Foundation, Q12(d) (2 marks): A person with type 1 diabetes tests their blood sugar level before they eat any food. The diagram shows their results. The units for blood sugar level are mmol
- June 2023, Biology Paper 7 Higher, Q13(c) (2 marks): A scientist investigates the effect of glucose on insulin levels in the blood. They drink glucose dissolved in water. They then measure the level of insulin in
- June 2022, Biology Paper 1 Foundation, Q8 (1 mark): Which statement is true for type 1 diabetes and false for type 2 diabetes? A The body stops responding to insulin, insulin injections are needed. B The body sto
- June 2022, Biology Paper 7 Higher, Q15(a)(ii) (3 marks): Glucagon granules inside the cells shown in Fig. 15.1 store glucagon. If the body has been exercising for some time, glucagon granules release their contents. E
- November 2021, Biology Paper 1 Foundation, Q11(a) (3 marks): It is important that our body maintains a constant internal environment. Complete these sentences about maintaining a constant internal environment. You can use
- November 2021, Biology Paper 7 Higher, Q9 (1 mark): Which statement about the hormone glucagon is correct? A Produced by the pancreas and decreases glucose levels in the blood. B Produced by the liver and increas
- November 2021, Biology Paper 7 Higher, Q15(a) (2 marks): The body maintains a constant internal environment in different ways. One example is maintaining body temperature. Explain why it is important to maintain body
- November 2020, Biology Paper 1 Foundation, Q4 (1 mark): A person needs to have injections every day because they have type 1 diabetes. 4 Which substance do these injections contain? A Glucose B Haemoglobin C Insulin
- November 2020, Biology Paper 1 Foundation, Q9: Table 9.1 shows the classification of non-diabetic, pre-diabetic and type 2 diabetes based on 9 blood glucose levels. Blood glucose levels Blood glucose levels
- November 2020, Biology Paper 7 Higher, Q1 (1 mark): Table 1.1 shows the classification of non-diabetic, pre-diabetic and type 2 diabetes based on their blood glucose levels. Blood glucose levels Blood glucose lev
- November 2020, Biology Paper 7 Higher, Q8 (1 mark): Look at the table. Glucagon Insulin Action of liver released released A yes no glucose converted to glycogen B no yes glycogen converted to glucose C yes no gly
- June 2019, Biology Paper 2 Foundation, Q14(a) (2 marks): The graph in Fig. 14.1 shows the level of glucose and insulin from a person with Type 2 diabetes over a four hour time period. 'The Child with a Metabolic Condi
- June 2019, Biology Paper 2 Foundation, Q14(b)(i) (1 mark): What factor does the graph in Fig. 14.2 indicate is linked to an increase in Type 2 diabetes? [1]
- June 2019, Biology Paper 2 Foundation, Q14(b)(ii) (1 mark): Suggest one lifestyle change that could reduce this factor and avoid a person developing Type 2 diabetes. [1]
- June 2019, Biology Paper 7 Higher, Q5 (1 mark): Which statement about both Type 1 and Type 2 diabetes is correct? A Insulin injections are always needed. B Regulating diet and exercise will help to control th
- June 2019, Biology Paper 7 Higher, Q16(b) (4 marks): Look at the graph. It shows how the levels of glycogen stored in the liver changes during the day. An evening Liver snack glycogen level Lunch Breakfast Dinner
- June 2018, Biology Paper 1 Foundation, Q13(a) (1 mark): State the usual age of onset for Type 1 diabetes. Write your answer in the table. [1]
- June 2018, Biology Paper 1 Foundation, Q13(b) (1 mark): Which organ in the body contains beta cells (β cells)? [1]
- June 2018, Biology Paper 1 Foundation, Q13(c) (3 marks): Write about the different treatments for the two types of diabetes. [3]
- June 2018, Biology Paper 2 Foundation, Q6 (1 mark): The more salt you eat, the more salt will be found in the urine you make. The graph shows the relationship between the amount of salt in urine and blood pressur
- June 2018, Biology Paper 2 Foundation, Q14(c) (2 marks): ARPKD can lead to kidney failure. People with kidney failure can use a dialysis machine. The diagram shows how a dialysis machine works. Blood in Dialysing flui
- June 2018, Biology Paper 7 Higher, Q7 (1 mark): The graph shows blood glucose levels of one individual after they have eaten a meal. Blood glucose levels 0 20 40 60 80 100 120 140 160 180 Time after eating (m
- June 2018, Biology Paper 7 Higher, Q16(b) (3 marks): The hypothalamus is involved in the regulation of body temperature. Explain why this function of the hypothalamus is important to the role of enzymes. [3]
- June 2018, Biology Paper 8 Higher, Q13(a)(i) (2 marks): Complete the diagram to show how insulin and glucagon work together to control blood sugar levels. [2]
- June 2018, Biology Paper 8 Higher, Q13(a)(ii) (1 mark): This type of control system is an example of negative feedback. Explain why. [1]
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